kc3-lang/SDL/test/testrelative.c

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• Hash : fe40a172
  Author :
  Date : 2014-12-18T00:19:52
  

  Initial merge of Emscripten port!
  
  With this commit, you can compile SDL2 with Emscripten
  ( http://emscripten.org/ ), and make your SDL-based C/C++ program
  into a web app.
  
  This port was due to the efforts of several people, including: Charlie Birks,
  Sathyanarayanan Gunasekaran, Jukka Jyl?nki, Alon Zakai, Edward Rudd,
  Bruce Mitchener, and Martin Gerhardy. (Thanks, everyone!)
  

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• test/testrelative.c

• /*
    Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely.
  */
  
  /* Simple program:  Test relative mouse motion */
  
  #include <stdlib.h>
  #include <stdio.h>
  #include <time.h>
  
  #include "SDL_test_common.h"
  
  #ifdef __EMSCRIPTEN__
  #include <emscripten/emscripten.h>
  #endif
  
  static SDLTest_CommonState *state;
  int i, done;
  SDL_Rect rect;
  SDL_Event event;
  
  static void
  DrawRects(SDL_Renderer * renderer, SDL_Rect * rect)
  {
      SDL_SetRenderDrawColor(renderer, 255, 127, 0, 255);
      SDL_RenderFillRect(renderer, rect);
  }
  
  static void
  loop(){
      /* Check for events */
      while (SDL_PollEvent(&event)) {
          SDLTest_CommonEvent(state, &event, &done);
          switch(event.type) {
          case SDL_MOUSEMOTION:
              {
                  rect.x += event.motion.xrel;
                  rect.y += event.motion.yrel;
              }
              break;
          }
      }
      for (i = 0; i < state->num_windows; ++i) {
          SDL_Renderer *renderer = state->renderers[i];
          if (state->windows[i] == NULL)
              continue;
          SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
          SDL_RenderClear(renderer);
  
          DrawRects(renderer, &rect);
  
          SDL_RenderPresent(renderer);
      }
  }
  
  int
  main(int argc, char *argv[])
  {
  
      /* Enable standard application logging */
      SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
  
      /* Initialize test framework */
      state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
      if (!state) {
          return 1;
      }
      for (i = 1; i < argc; ++i) {
          SDLTest_CommonArg(state, i);
      }
      if (!SDLTest_CommonInit(state)) {
          return 2;
      }
  
      /* Create the windows and initialize the renderers */
      for (i = 0; i < state->num_windows; ++i) {
          SDL_Renderer *renderer = state->renderers[i];
          SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
          SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
          SDL_RenderClear(renderer);
      }
  
      srand((unsigned int)time(NULL));
      if(SDL_SetRelativeMouseMode(SDL_TRUE) < 0) {
          return 3;
      };
  
      rect.x = DEFAULT_WINDOW_WIDTH / 2;
      rect.y = DEFAULT_WINDOW_HEIGHT / 2;
      rect.w = 10;
      rect.h = 10;
      /* Main render loop */
      done = 0;
  #ifdef __EMSCRIPTEN__
      emscripten_set_main_loop(loop, 0, 1);
  #else
      while (!done) {
          loop();
          }
  #endif
      SDLTest_CommonQuit(state);
      return 0;
  }
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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